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Well, Paul confirmed via twitter, that the 4.3-based MCR will come to the N4 for sure - just maybe not right away...
There are some issues with 4.3 anyway still (an unclear root situation for one) so I'm not really in a hurry.

I am on it now, it seems smoother, but I am too spoiled by extras from the MCR, so I will flash back to 4.2.2 and wait for Paul's new release I guess.
BTW - Helium backups restored from Drive with no hitch - a decision to ditch Titanium (or at least cover both bases) was a good one.
The SuperSU for S4 GPe's 4.3 leak works and you can just flash it from recovery. No dice with trying other SU solutions in my experience.

Well, I originally bought SwiftKey X on sale first (and SK3 goes on sale quite regularly as well) and I was more than glad to pay full price for the Tablet version (which seem to never be on sale ;))
I don't want to re-purchase both of them for full-price though...

I really wish Google would include this Quick Settings mod upstream. That's exactly the functionality it needs.
On a related note, although slightly offtopic - did you perhaps enable two-finger swipe for Quick Settings Shade in MCR for N7?

Nexus 7 with 4.2 is very, very slow for me since I activated multiple user profiles - on single user it was OK.
Nexus 4 wakes up the screen for every notification and update (it wakes precisely every 15 mins, the schedule for Plume updates).
Funnily enough it wasn't the case until today (or I didn't notice that).

Received mine this morning, so will try and answer any questions as well.
I just did it - it gets pretty warm in the upper back part quickly. But same goes with my Nexus 7 - Google Earth really strains the SoC...
Plus with wintertime approaching I consider it a feature, not a bug :P